Printing machine



Nov. 26, 1957 2,814,247

E. HOLMBERG PRINTING MACHINE Filed March 4, 1954 2 Sheets-Sheet 1 INVENTOR.

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flrromvexs United States This invention relates to a duplicating device for printing onto a sheet of material, such as paper or pasteboard. It is desirable to have a duplicating device having a simple and eflicient means for feeding a sheet of material through said device to have an impression made thereon. It is desirable to have a single member adapted to actuate the entire operation of said device.

It is an object of this invention to provide a duplicating device having a simple and eflicient means for controlling the entire operation of said device.

It is another object of this invention to provide a duplicating device having a single member adapted to actuate the entire operation of feeding sheets of material through said device and having impressions made thereon.

It is another object of this invention to provide a duplicating device having a member for operating a feeding arm for feeding sheets of material to a member which prepares said sheets for having impressions made thereon, and said first mentioned member actuates said second mentioned member to move said sheets into position to have impressions made thereon.

It is more specifically an object of this invention to provide a duplicating device having a frame, a drum journaled in said frame and adapted to have a master copy thereon, means for rotating said drum, an impression roller journaled in said frame and rotated by engagement with said drum, a member disposed in said frame containing liquid therein for moistening the upper surface of said sheet material to prepare the same to have impressions made thereon, a roller journaled in the lower end portion of said member for applying said moisture to said sheet material, a roller journaled in said frame adapted to rotate said last mentioned roller and be rtated by said impression roller, a member for holding sheets of material, a feeding arm mounted on said frame above said last mentioned member, a link connecting said drum and said feeding arm for reciprocating said feeding arm when said drum is rotated, whereby when said drum is rotated said feeding arm feeds said sheet material between said second and third mentioned rollers whereby said sheet material is moistened and said last mentioned rollers move said sheet material forwardly to place the same between said drum and said impression roller and the rotation of said drum and impression roller moves said sheet forwardly whereby an impression of said master copy is placed on said sheet material.

These and other objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying drawings in which like reference characters refer to similar parts atent taken on line 4-4 of Fig. 2, as indicated by the arrows;

Fig. 5 is a view of applicants device in vertical section taken on line 5-5 of Fig. 2, as indicated by the arrows; and

Fig. 6 is a view in vertical section taken on line 6-6 of Fig. 4, as indicated by the arrows.

Referring to the drawings, a frame 10 is provided having spaced side plates 10a and 10b. Said member 10 may be made of any suitable material and in the embodiment of the invention here illustrated, said member is disclosed as being made preferably of a sheet metal material. Said plates 10a and 1% have substantially rectangular portions and 10d and have forwardly extending portions 10a and 10 of reduced vertical dimension. Said plates have outwardly turned flange portions 10g and 10h. Said flange portions extend about said rectangular portions and along the entire bottom portions of said plate members. Supporting members ltln are provided and are here disclosed as being formed as suction cup members and as having upwardly extending portions adapted to be threaded into the bottom flange portions of plates 10a and 10b to provide a non-slipping support for said frame.

Said plate members are provided with slots 101' and 101' which are inclined downwardly and rearwardly from points adjacent the front end portions of said rectangular portions. Said slots respectively have small rectangular notches 1 3th and 19m adjacent one side of their upper end portions. A plate member 11 is provided which is generally rectangular in form and is disposed between said plate members 10a and 10b adjacent said slots and inclined in a plane parallel to the plane of said slots and said member 11 holds said plates 10a and 10b in spaced relation and has flanged end portions respectively secured to said plate members in any suitable manner, as by rivets.

A plate member 13 is provided disposed between said plate members 10a and lilb in a plane slightly inclined upwardly from a horizontal plane and having a substantially U-shaped rear end portion 13a and having a front end portion 13b inclined upwardly slightly from the plane of said plate member 13. Said member 13 has downwardly turned flange portions 13c at each side thereof and the same are secured to said plate members in any suitable manner, as by rivets 14. Member 13 is provided with slots 13c at each side thereof. Mounted on member 13 and extending longitudinally thereof and movable transversely thereof in slots are guide members 15. Said members have rectangular plate portions 15a disposed adjacent the underside of member 13 and said plate portions have right angled upwardly extending side portions 15b and have right angled depending portions 15c. Slots are provided adjacent portions 15a and 15b through which the side portions of member 13 between slots 13c are disposed. Extending transversely of member 15 and disposed through said depending portions 15b and through side members 10a and 10b is an adjusting screw member 17 having a handle portion 17a. Said members 15 are movable transversely of plate member 13 having portions 15a extending above the plane of member 13 and being movable toward and away from each other by means of adjusting screw member 17. Member 13 is adapted to carry a supply of sheet material, such as paper or pasteboard, and members 15 may be adjusted to have their side portions 15a moved to be closely adjacent the side portions of said sheet material to hold the same in position. Members 15b have inserted therein resilient members preferably made of a rubber material to resiliently hold said sheet material in position.

Journaled in said frame member transversely thereof is roller 18 having a resilient body portion 18a and having a shaft 18b. The end portions of said shaft 18b extend through openings in said plate members a and 10b. Levers 19 are provided disposed at the outer sides of plate members 10a and 10b and overlying said openings and having openings therein alined with said first mentioned openings in which are journaled the ends of said shaft 18b. Said levers 19 are pivotally secured at one end to plate members 10a and 1011 by metal screws 20. Tensile coiled springs 21 are provided having their lower ends secured to apertured lug portions 19a extending upwardly from a portion of said levers 13. Said springs have their upper ends secured to lug portions 22 extending outwardly of plate members 10a and 10b somewhat above levers 19 whereby said roller 18 is held in operating position under the tension of said springs 21.

An impression roller 23 is provided journaled in frame member 10 and extending transversely thereacross having a resilient outer surface 23a and having a shaft 231) having its ends respectively extending therethrough. The end portions of said shaft 2311 are disposed through enlarged openings in said plate members 10a and 10b. Levers 25 are provided at the outer sides of members 10a and 10b and have openings 25:: therein. Here shown as being disposed in said openings are ball bearings 25b. The end portions of said shaft 23b are journaled in said bearings. Said levers 25 are pivotally secured to said plate members 10a and 10b at one end portion by metal screws 20. Tensile coiled springs 27 are provided having their lower ends secured to the other end portions of levers 25 and having their upper ends secured to lug members 29 extending outwardly of plate members 10a and 10b, substantially above said levers 25. Roller 23 is thus held in operating position under the resilient tension of said springs 27.

Journaled in said frame 10 is a drum 30. Said drum 30 is provided with a shaft 30a which is journaled in plate members 10a and 10b. Said drum has an open portion 30b in its periphery. frame 10 so that its peripheral surface will engage said roller 25 under pressure. Said drum 30 has a narrow slot 30c extending transversely thereacross. Pivotally secured in said drum adjacent the inner side of its periphery is a plate member 32 extending thereacross and having a handle portion 32a whereby said plate member may be moved to extend across said slot 30c. A stop member 30d is provided secured to the inner side of said drum and is adapted to stop the forward movement of said plate 32 when the same is moved just across said slot 300. A crank 35 is provided for rotating said drum 30 and the same is secured to one end of shaft 30a by a pin 36. A master duplicating copy 31 is provided disposed about drum 30. Said member 31 is adapted to have one end portion disposed through slot 300 for some distance. Member 32 is then moved forwardly across said slot and against said stop member 30a to hold said edge portion of said duplicating copy securely in said slot. The remainder of said duplicating copy overlies the surface of said drum.

Shaft members 18b and 23b extend outwardly of plate member 10b for a short distance. Respectively secured to the outer ends of said shafts are sprockets 39 and 40. Running over said sprockets is an endless belt 42. A U- shaped bracket 46 is provided having its depending end portions pivotally secured to portions 10 and 10g by metal screws 48, and said bracket is disposed over the rearward portion of plate member 13. Swingably mounted on bracket 46 is an arm member 49 having resilient corrugated members 43a disposed about the lower portion thereof and adapted to engage the surface of member 13 when in lowered position.

A connecting member is provided having a short link portion 50a secured to shaft 30a. Said member 50 has its other portion comprising an elongated link pivotally secured to a side portion of bracket 46 whereby when said drum 30 is rotated, said bracket 46 and said feeding arm 49 will be given reciprocating movement.

Said drum is journaled in said A metal casing is provided, rectangular in vertical and horizontal cross section, the same having a bottom, and having a moisture retaining pad 55a disposed therein. Said casing has a roller 57 journaled in its bottom portion. A rather thin layer 55:11 of said pad extends below said bottom and engages the side of roller 57 so as to moisten said roller. Said member 55 is provided with spaced outwardly extending lug members 55b at its sides which are adapted to be received in and movable in slots 101' and 10 Said member 55 has a removable front plate portion 550 held in position by a bolt 55d extending through said member 55 and having a handle portion 552 threaded onto said bolt to hold said plate in position.

The lower end of front plate 550 engages the lower end of layer 55111 for holding the same in contact with roller 57.

In operating position, said member 55 is disposed in said slots Ni and 101' and said roller 57 will engage said roller 18 under tension. Said member 55 will be pushed downwardly to press against said roller 18 and the upper lug members 55b will be disposed in openings 10k and 10m to hold said member 55 in position.

Side cover plate members are provided to overlie plate members 10a and 10b, and said plate members 60 have inwardly turned flange portions 60a which overlie flange portions 10g and 10k and are secured thereto by metal screws 63. Said supporting members 1011 are also threaded through said flange portions of said cover plate 60 and as well said flange portions of said plates 10a and 1017.

In operation, a quantity of sheet material will be placed on plate member 13 between upwardly extending members 15a and said members 15a will be moved transversely of member 13 toward or away from one another to accommodate the width of said sheet material and to be closely adjacent the sides of said sheet material to hold the same in alinement in position. Said portions 15a are movable by operation of said screw member 17. Feeding arm 49 will be placed in a lowered position so that portions 49a will rest on said sheet material. The moistening pad 55a in member 55 will be moistened with a proper fluid, such as alcohol, and said member 55 will be placed in operating position, as above described. A master duplicating copy will be placed on drum 30, as above described. Rollers 18 and 23 are held in operating position under the tension of spring members 21 and 27 respectively. Roller 57 is held in position pressed against roller 18, as above described. The surface portion of drum 30 engages roller 23 under pressure, as above described. Drum 30 will be rotated by crank 35 in a countor-clockwise direction. The rotation of drum 30 will actuate bracket 46 and feeding arm 49 by moving the same with a reciprocating motion. Said feeding arm 49 and more specifically members 49a will move sheets of said sheet material forwardly in said device and the forward edge of said sheets will first be disposed between rollers 57 and 18. When said drum is rotated, it will rotate roller 23 under pressure. Said roller 23 will drive roller 18 by means of said driving belt 42. Roller 18 will rotate roller 57 under pressure. Hence when the forward edge of said sheet material is first disposed between rollers 57 and 18, said rollers will move said sheet material forwardly by their rotation and said roller 57 which receives moisture from pad 55a will deposit the same on the upper surface of said sheet material. Said rollers 57 and 18 move said sheet material forwardly to a position between said drum 30 and roller 23. The rotation of said drum 30 is coordinated with the forward movement of said sheet material so that that when the forward edge of said sheet material engages roller 23, the forward edge of the peripheral surface of said drum 30 will also engage roller 23 and the rotation of said drum against said roller 23 will move said sheet material forwardly therebetween and an impression of said master duplicating copy on said roller will be printed on the upper surface of said sheet material. This operation will be repeated until impressions have been placed on the desired number of sheets of said material.

Thus it is seen that I have provided a duplicating device having a simple and efiicient actuating and control means whereby the rotation of the drum positively actuates means for feeding sheet material into and through said device and which positively actuates means for properly moistening said sheet material and having an impression printed thereon. Applicants device has proved very successful in operation and is being made in commercial quantities.

It will of course be understood that various changes may be made in the form, details, arrangement and proportions of the parts, without departing from the scope of applicants invention, which, generally stated, consists in a device capable of carrying out the objects above set forth, in the parts and combinations of parts disclosed and defined in the appended claim.

What is claimed is:

A duplicating device for printing on a sheet of material having in combination, a frame having spaced vertical side plates, a driven rotatable feeding roller over which said sheet to be printed passes, a second roller above said roller and adapted to press said sheet against said first mentioned roller, an upwardly extending casing above said second roller having means at its lower end in which said second roller is journaled, said casing having a bottom and an open top, a moisture holding member in said casing supported on said bottom, the same having a layer extending downwardly below said bottom and engaging the surface of said second roller, said casing having a removable side extending below said bottom the lower portion of which engages the lower portion of said layer, means for holding said removable side in operative position, said means being movable to permit removal of said side, said side plates having transversely aligned slots therein and said casing having lugs respectively disposed in said slots.

References Cited in the file of this patent UNITED STATES PATENTS 2,247,134 Roethe June 24, 1941 2,271,954 Rockhill Feb. 3, 1942 2,586,461 Ford et al Feb. 19, 1952 2,588,917 Geib Mar. 11, 1952 

